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Why is speed classified as a scalar quantity and velocity classified as a vector quantity?
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Why is speed classified as a scalar quantity and velocity classified as a vector quantity?

User Catomatic
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Speed is classified as a scalar quantity and does not describe the direction.

Velocity is classified as a vector quantity as it describes both magnitude and direction.
User Aju John
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Scalars have just magnitude, but vectors have magnitude /and/ direction. This is why speed, a magnitude describing how fast something is, is not a scalar quantity; but velocity, which is speed and a direction, is.
User Bairog
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